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Finding the Fourth Proportional to 10,530.96, 14,532.84 and 5,815.32

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Solution

The fourth proportional to 10,530.96, 14,532.84 and 5,815.32 is: 8,025.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,530.96 : 14,532.84 = 5,815.32 : x
  2. Step 2: Convert to fraction form
    10,530.96/14,532.84 = 5,815.32/x
  3. Step 3: Cross multiply
    10,530.96x = 14,532.84 × 5,815.32
  4. Step 4: Simplify right side
    10,530.96x = 84,513,115.11
  5. Step 5: Solve for x
    x = 84,513,115.11/10,530.96
  6. Step 6: Final answer
    x = 8,025.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.